Measurements and Result Displays
R&S
®
ESW
107User Manual 1177.6298.02 ─ 08
9.3.1.4 Overview of Receiver Measurements
The Receiver application provides several measurements and evaluation methods that
are typical for EMC measurements.
● Scan......................................................................................................................107
● Peak Search..........................................................................................................108
● Final Measurement................................................................................................110
● IF Analysis.............................................................................................................110
Scan
During a scan, the R&S ESW measures the signal strength of discrete frequencies
over a custom frequency range. The frequency step size and measurement time for
each frequency are arbitrary.
The scan parameters are either based on the current receiver settings or on the set-
tings defined in a Scan Table. You can take transducer factors or sets as well as limit
lines into account. They can be defined and displayed separately, but are not included
in the scan data record.
The scanned frequency range is defined by the start and stop frequency set independ-
ently of the scan table. A scan table can thus be defined for each measurement task.
You can either perform a continuous scan or a single scan. A single scan stops when it
reaches the stop frequency. A continuous scan repeats the scan until you interrupt or
abort it deliberately.
The maximal number of measured frequencies is limited to 4.000.000 per detector. The
data can be stored for postprocessing. If the scan subranges are defined so that more
than the possible values would be measured, a respective message is output upon the
scan start. Afterwards the scan is performed up to the maximum value.
Figure 9-7: Scan on selected frequencies showing gaps in the trace
The R&S ESW offers the following scan methods:
●
Stepped scan in the frequency domain
In stepped scan mode, step width and frequency spacing (step mode) can be
selected.
●
Time domain scan in the frequency domain
Test Automation
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